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https://issues.apache.org/jira/browse/BEAM-7891?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17052492#comment-17052492
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Luke Cwik commented on BEAM-7891:
---------------------------------
This was fixed in 2.15. The jar dropped from ~3mb to ~30kb.
> gRPC vendoring contains overlapping classes
> -------------------------------------------
>
> Key: BEAM-7891
> URL: https://issues.apache.org/jira/browse/BEAM-7891
> Project: Beam
> Issue Type: Bug
> Components: build-system
> Reporter: Romain Manni-Bucau
> Priority: Major
>
> In 2.14 the overlapping bug between modules is still not fixed, it still
> prevents to use beam with some JVM, pollutes a lot shadowing/uber jar
> creation and can prevent beam to run under some classloading setup
> (potentielly in an engine/runner). Here is one example:
>
> {code:java}
> [INFO] [WARNING] beam-vendor-grpc-1_13_1-0.2.jar,
> beam-vendor-sdks-java-extensions-protobuf-2.14.0.jar define 1814 overlapping
> classes:
> [INFO] [WARNING] -
> org.apache.beam.vendor.grpc.v1p13p1.com.google.common.collect.ImmutableMapValues$1
> [INFO] [WARNING] -
> org.apache.beam.vendor.grpc.v1p13p1.com.google.common.util.concurrent.ImmediateFuture$ImmediateCancelledFuture
> [INFO] [WARNING] -
> org.apache.beam.vendor.grpc.v1p13p1.com.google.common.base.Converter$ReverseConverter
> [INFO] [WARNING] -
> org.apache.beam.vendor.grpc.v1p13p1.com.google.common.hash.HashCode$IntHashCode
> [INFO] [WARNING] -
> org.apache.beam.vendor.grpc.v1p13p1.com.google.common.collect.Iterables$8$1
> [INFO] [WARNING] -
> org.apache.beam.vendor.grpc.v1p13p1.com.google.common.collect.HashBiMap
> [INFO] [WARNING] -
> org.apache.beam.vendor.grpc.v1p13p1.com.google.common.cache.CacheBuilderSpec$WriteDurationParser
> [INFO] [WARNING] -
> org.apache.beam.vendor.grpc.v1p13p1.com.google.common.collect.Multiset$Entry
> [INFO] [WARNING] -
> org.apache.beam.vendor.grpc.v1p13p1.com.google.common.graph.AbstractValueGraph
> [INFO] [WARNING] -
> org.apache.beam.vendor.grpc.v1p13p1.com.google.common.util.concurrent.InterruptibleTask{code}
> This task is indeed about fixing the overlappings but also ensuring it can't
> come in 2.15 since all versions are affected since vendoring had been set up
> and it never had been cleanly fixed on all the build.
>
> Thanks
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